Bracket second mount

The requests, in order

1Make an L-bracket, lying in the XY plane with Z up. A base plate 50 mm along X by 40 mm along Y by 4 mm thick, centred on the origin in X and Y with its bottom face on Z = 0, plus an upright wall 50 mm wide, 40 mm tall and 4 mm thick standing on the base's +Y edge, so the bracket's overall height is 40 mm, with the wall running from Z = 0 to Z = 40, its outer face at Y = 20 and its inner face at Y = 16. Put two 4.4 mm holes through the base at X = ±15, Y = −10. Name the sub-part exactly `bracket`.

2Add two more 4.4 mm holes, this time straight through the upright wall along Y, at X = ±15 and Z = 30. Keep the base holes exactly where they are.

3Lighten the upright with one 20 mm diameter hole through it, centred at X = 0 and Z = 20, without touching any of the four existing holes.

What the AI judge checks

• An L-shaped bracket: a flat base plate with a wall standing up along one edge
• Two small round holes through the flat base plate
• Two small round holes through the upright wall, near its top
• One much larger round hole through the middle of the upright wall
• The large hole does not run into or overlap any of the small holes

Measured checks

• one sub-part named bracket (gate)
• base hole at X = 15 is 4.4 mm (gate)
• base hole at X = -15 is 4.4 mm (gate)
• one sub-part named bracket (gate)
• base hole at X = 15 is 4.4 mm (gate)
• base hole at X = -15 is 4.4 mm (gate)
• upright hole at X = 15, Z = 30 is clear (gate)
• upright hole at X = -15, Z = 30 is clear (gate)
• one sub-part named bracket (gate)
• base hole at X = 15 is 4.4 mm (gate)
• base hole at X = -15 is 4.4 mm (gate)
• upright hole at X = 15, Z = 30 is clear (gate)
• upright hole at X = -15, Z = 30 is clear (gate)
• 20 mm lightening hole is clear
• material remains just outside the 20 mm hole